The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2022
Filed:
Jul. 26, 2017
Biotest Ag, Dreieich, DE;
Oliver Maneg, Bad Homburg, DE;
Achim Hannappel, Frankfurt am Main, DE;
Alexander Moehlenkamp-Roettger, Floersheim-Wicker, DE;
Wolfgang Moeller, Oberursel, DE;
Dieter Rudnick, Dreieich, DE;
BIOTEST AG, Dreieich, DE;
Abstract
A process for the preparation of pharmaceutically acceptable immunoglobulin compositions from plasma-derived immunoglobulin fractions which allows the parallel preparation of immunoglobulin compositions enriched in IgG, IgM and IgA. In this process, immunoglobulin contained in Cohn fraction I/II/III or Kistler Nitschmann fraction A+I is resolubilized at conductivities of at least 1 mS/cm, and following removal of contaminating protein the resolubilized immunoglobulin is subjected to anion exchange chromatography to obtain IgG- and IgM/IgA-enriched immunoglobulin compositions. The IgG-enriched immunoglobulin composition is further subjected to treatment with a cation exchange material to obtain an immunoglobulin composition having a reduced properdin content.